DE69923781D1 - Pressure and checking of self-verifying security documents - Google Patents

Pressure and checking of self-verifying security documents

Info

Publication number
DE69923781D1
DE69923781D1 DE1999623781 DE69923781T DE69923781D1 DE 69923781 D1 DE69923781 D1 DE 69923781D1 DE 1999623781 DE1999623781 DE 1999623781 DE 69923781 T DE69923781 T DE 69923781T DE 69923781 D1 DE69923781 D1 DE 69923781D1
Authority
DE
Grant status
Grant
Patent type
Prior art keywords
checking
self
pressure
security documents
verifying security
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE1999623781
Other languages
German (de)
Other versions
DE69923781T2 (en )
Inventor
Scott Carr
W Perry
Geoffrey B Rhoads
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digimarc Corp
Original Assignee
Digimarc Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

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    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/333Watermarks
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
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    • G06Q20/00Payment architectures, schemes or protocols
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    • H04N2201/3239Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark using a plurality of different authentication information
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    • H04N2201/3269Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs
    • H04N2201/327Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs which are undetectable to the naked eye, e.g. embedded codes
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    • H04N2201/3271Printing or stamping
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US7027612B2 (en) 2001-10-05 2006-04-11 Digimarc Corporation Marking physical objects and related systems and methods
US6782116B1 (en) 2002-11-04 2004-08-24 Mediasec Technologies, Gmbh Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation
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US6970573B2 (en) 2005-11-29 grant
US6389151B1 (en) 2002-05-14 grant
EP1131769B1 (en) 2005-02-16 grant
DE69923781T2 (en) 2005-07-07 grant
US20050008189A9 (en) 2005-01-13 application
EP1131769A4 (en) 2003-03-19 application
DE69937972T2 (en) 2009-01-08 grant
US7639837B2 (en) 2009-12-29 grant
WO2000031675A2 (en) 2000-06-02 application
US20070114788A1 (en) 2007-05-24 application
US20020061120A1 (en) 2002-05-23 application
WO2000031675A3 (en) 2000-08-10 application
DE69937972D1 (en) 2008-02-21 grant
EP1131769A2 (en) 2001-09-12 application
US8280101B2 (en) 2012-10-02 grant
US7269275B2 (en) 2007-09-11 grant
US20060165256A1 (en) 2006-07-27 application
US20110002503A1 (en) 2011-01-06 application

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Owner name: DIGIMARC CORP., BEAVERTON, OREG., US